Commit f4922b69 authored by Xu Lu's avatar Xu Lu Committed by Paul Walmsley
Browse files

riscv: hwprobe: Export Zalasr extension 



Export the Zalasr extension to userspace using hwprobe.

Signed-off-by: default avatarXu Lu <luxu.kernel@bytedance.com>
Link: https://patch.msgid.link/20251020042056.30283-4-luxu.kernel@bytedance.com


Signed-off-by: default avatarPaul Walmsley <pjw@kernel.org>
parent 4640be25

Documentation/arch/riscv/hwprobe.rst

+4 −1
Original line number Diff line number Diff line
@@ -249,6 +249,9 @@ The following keys are defined: 
       defined in the in the RISC-V ISA manual starting from commit e87412e621f1

       ("integrate Zaamo and Zalrsc text (#1304)").



  * :c:macro:`RISCV_HWPROBE_EXT_ZALASR`: The Zalasr extension is supported as

       frozen at commit 194f0094 ("Version 0.9 for freeze") of riscv-zalasr.



  * :c:macro:`RISCV_HWPROBE_EXT_ZALRSC`: The Zalrsc extension is supported as

       defined in the in the RISC-V ISA manual starting from commit e87412e621f1

       ("integrate Zaamo and Zalrsc text (#1304)").

arch/riscv/include/uapi/asm/hwprobe.h

+1 −0
Original line number Diff line number Diff line
@@ -82,6 +82,7 @@ struct riscv_hwprobe { 
#define		RISCV_HWPROBE_EXT_ZAAMO		(1ULL << 56)

#define		RISCV_HWPROBE_EXT_ZALRSC	(1ULL << 57)

#define		RISCV_HWPROBE_EXT_ZABHA		(1ULL << 58)

#define		RISCV_HWPROBE_EXT_ZALASR	(1ULL << 59)

#define RISCV_HWPROBE_KEY_CPUPERF_0	5

#define		RISCV_HWPROBE_MISALIGNED_UNKNOWN	(0 << 0)

#define		RISCV_HWPROBE_MISALIGNED_EMULATED	(1 << 0)

arch/riscv/kernel/sys_hwprobe.c

+1 −0
Original line number Diff line number Diff line
@@ -109,6 +109,7 @@ static void hwprobe_isa_ext0(struct riscv_hwprobe *pair, 
		EXT_KEY(ZAAMO);

		EXT_KEY(ZABHA);

		EXT_KEY(ZACAS);

		EXT_KEY(ZALASR);

		EXT_KEY(ZALRSC);

		EXT_KEY(ZAWRS);

		EXT_KEY(ZBA);